MakeItFrom.com
Menu (ESC)

ASTM A387 Grade 91 Class 2 vs. EN 1.1221 Steel

Both ASTM A387 grade 91 class 2 and EN 1.1221 steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 91 class 2 and the bottom bar is EN 1.1221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
210 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
10 to 21
Fatigue Strength, MPa 330
240 to 340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
72
Shear Strength, MPa 420
450 to 520
Tensile Strength: Ultimate (UTS), MPa 670
730 to 870
Tensile Strength: Yield (Proof), MPa 470
390 to 550

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
48
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.5
Embodied Energy, MJ/kg 37
19
Embodied Water, L/kg 88
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
67 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 580
410 to 800
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
26 to 31
Strength to Weight: Bending, points 22
23 to 26
Thermal Diffusivity, mm2/s 6.9
13
Thermal Shock Resistance, points 19
23 to 28

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0.57 to 0.65
Chromium (Cr), % 8.0 to 9.5
0 to 0.4
Iron (Fe), % 87.3 to 90.3
97.1 to 98.8
Manganese (Mn), % 0.3 to 0.6
0.6 to 0.9
Molybdenum (Mo), % 0.85 to 1.1
0 to 0.1
Nickel (Ni), % 0 to 0.4
0 to 0.4
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0.2 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0